US6939400B2 - Ink, production method of the same materials for producing the same and printed matter with the same - Google Patents
Ink, production method of the same materials for producing the same and printed matter with the same Download PDFInfo
- Publication number
- US6939400B2 US6939400B2 US10/723,265 US72326503A US6939400B2 US 6939400 B2 US6939400 B2 US 6939400B2 US 72326503 A US72326503 A US 72326503A US 6939400 B2 US6939400 B2 US 6939400B2
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- United States
- Prior art keywords
- ink
- solvent
- printed matter
- printed
- flake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000000463 material Substances 0.000 title description 4
- 239000002904 solvent Substances 0.000 claims abstract description 57
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 28
- MFKRHJVUCZRDTF-UHFFFAOYSA-N 3-methoxy-3-methylbutan-1-ol Chemical compound COC(C)(C)CCO MFKRHJVUCZRDTF-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000011230 binding agent Substances 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims description 34
- 239000000758 substrate Substances 0.000 claims description 22
- 229920005668 polycarbonate resin Polymers 0.000 claims description 4
- 239000004431 polycarbonate resin Substances 0.000 claims description 4
- 239000000976 ink Substances 0.000 description 37
- 238000007639 printing Methods 0.000 description 29
- 230000000052 comparative effect Effects 0.000 description 18
- 229920005989 resin Polymers 0.000 description 18
- 239000011347 resin Substances 0.000 description 18
- 229920000515 polycarbonate Polymers 0.000 description 9
- 239000004417 polycarbonate Substances 0.000 description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- 238000007650 screen-printing Methods 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000007865 diluting Methods 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 206010058667 Oral toxicity Diseases 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 231100000418 oral toxicity Toxicity 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000004210 ether based solvent Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
Definitions
- the present invention relates to an ink, a production method of the ink, the materials for producing the ink and the printed matter wherein printing is made by use of the ink.
- Patent Document 2 an ink which comprises 100 parts by weight of an aluminum flake containing aluminum flakes of 0.5 ⁇ m or less in thickness and 20 ⁇ m 2 to 2,000 ⁇ m 2 in flake area in a content of 75% or more, 15 to 200 parts by weight of abinder polymer, and 600 to 3,000 parts by weight of a solvent. It is true that following the description of Patent Document 2, a printed matter higher in specular gloss than a printed matter described in Patent Document 1 can be obtained.
- the types of solvents, utilized in an ink which imparts to a printed matter metallic luster or specular gloss are at best described in paragraph [0012] in Patent Document 2 as such that “Additionally, the solvent utilized is the one that dissolves the above described binder polymer and dilutes the solution thus obtained, and the general examples of such a solvent include esters, ethers, ketones, aromatic hydrocarbons and the like.” Additionally, even in the examples concerned, ketone based solvents and glycol ether based solvents are merely exemplified, but the compound names of such solvents are not specified.
- any solvent capable of dissolving and diluting a binding agent used can be optionally utilized, and hence the solvent can be selected according to the printing method involved in such a way that the solvent is optionally selected from the commonly used solvents including alcohols such as methyl alcohol, ethyl alcohol, propyl alcohol, and butyl alcohol; ktones such as acetone, isophorone, methyl ethyl ketone, and methyl isobutyl ketone; cellosolves such as methyl cellosolve and ethyl cellosolve; and aromatic hydrocarbons such as toluene and xylene; additionally, aliphatic hydrocarbons, ethers and the like, commonly used as diluents and compatible with the above described solvents but incapable of dissolving the binding agents, can also be used as printing aids and dryness regulator
- Patent Document 1 and Patent Document 2 When printing is made according to Patent Document 1 and Patent Document 2, a bright printed matter or a specular surface printed matter can be obtained, but it has been found that serious drawbacks are generated when such printing is applied to industrial mass production, particularly, when the screen printing is applied to mass printing.
- the inks described in Patent Document 1 and Patent Document 2 each contains a large content of solvent, and hence mass printing is not preferable because the working environment is remarkably degraded in operation with ordinary facilities when a highly toxic solvent is used for which the LD 50 value representing the mouse oral toxicity is 2,000 mg/kg or less, particularly, 1,600 mg/kg or less, or a solvent is used for which the vapor pressure is high (drawback ⁇ 1>).
- the specular gloss appearance is degraded and printing unevenness is generated with increasing number of the printed sheets when the number of the printed sheets is large (drawback ⁇ 2>).
- the specular gloss appearance is sometimes remarkably degraded (drawback ⁇ 3>).
- an object of the present invention is the provision of an ink to meet the purpose of concurrently resolving the above described drawback ⁇ 1>, drawback ⁇ 2>, and drawback ⁇ 3>, a production method of the ink, the materials for producing the ink, and the printed matter wherein printing is made by use of the ink.
- the present invention provides an ink comprising 100 parts by weight of an aluminum flake containing aluminum flakes of 0.5 ⁇ m or less, more preferably 0.3 ⁇ m or less, in thickness and 20 ⁇ m 2 to 2,000 ⁇ m 2 in flake area in a content of 75% or more, 3 to 200 parts by weight of a binding agent, and 600 to 4,000 parts by weight of a solvent, wherein the solvent is the one containing 20 wt % or more of 3-methyl-3-methoxy-1-butanol.
- the solvent is the one containing 40 wt % or more of 3-methyl-3-methoxy-1-butanol, the problems in the present invention can be resolved further more satisfactorily.
- 3-methyl-3-methoxy-1-butanol contained in the solvent is represented by the following formula, has an LD 50 value of 5,830 mg/kg representing the mouse oral toxicity thereof the toxicity thereof is extremely low, and is not so large in vapor pressure at room temperature.
- 3-methyl-3-methoxy-1-butanol has an appropriate boiling point of 174° C., and hence even when the screen printing is applied to conduct mass printing by use of the above described ink, clogging is scarcely caused in the screen by the solvent evaporation on the stencil with the elapsed time of printing operation. Accordingly, when the screen printing is applied to mass printing, even for a large number of printed sheets, neither the gradual generation of printing unevenness nor the gradual degradation of the specular gloss appearance caused by the printing unevenness occurs (resolution of drawback ⁇ 2>).
- 3-methyl-3-methoxy-1-butanol dissolves satisfactorily a binding agent for use in ink such as polyester resin, acrylic resin, cellulose derivative resin, polyvinyl butyral resin and the like, but is small on one hand in affinity to polycarbonate and the boiling point thereof is appropriate, and hence even when this compound is applied onto a polycarbonate substrate, drying can be conducted without damaging the surface of the polycarbonate substrate. It is particularly preferable that the drying temperature of the printed matter is of the order of 40 to 60° C. Accordingly, even when the above described ink is printed on the backside of the transparent polycarbonate substrate, the backside of the polycarbonate substrate is prevented from being damaged and thereby whitened. Thus, no degradation of the specular gloss appearance is found when printing is made on the backside of the transparent polycarbonate substrate and viewing is made from the front surface side of the substrate (resolution of drawback ⁇ 3>).
- the present invention provides a production method of an ink comprising a step of mixing a mixture, which comprises an aluminum flake containing aluminum flakes of 0.5 ⁇ m or less, preferably 0.3 ⁇ m or less, in thickness and 20 ⁇ m 2 to 2,000 ⁇ m 2 in flake area in a content of 75% or more and a solvent containing 20 wt % or more of 3-methyl-3-methoxy-1-butanol, with either a binding agent or a binding agent solution.
- a mixture which comprises an aluminum flake containing aluminum flakes of 0.5 ⁇ m or less, preferably 0.3 ⁇ m or less, in thickness and 20 ⁇ m 2 to 2,000 ⁇ m 2 in flake area in a content of 75% or more and a solvent containing 20 wt % or more of 3-methyl-3-methoxy-1-butanol, with either a binding agent or a binding agent solution.
- the present invention provides a mixture which comprises an aluminum flake containing aluminum flakes of 0.5 ⁇ m or less, preferably 0.3 ⁇ m or less, in thickness and 20 ⁇ m 2 to 2,000 ⁇ m 2 in flake area in a content of 75% or more and a solvent containing 20 wt % or more of 3-methyl-3-methoxy-1-butanol.
- the production of the ink by use of such a mixture permits obtaining the ink capable of resolving the drawbacks ⁇ 1> to ⁇ 3> without being accompanied by a dangerous process of handling the above described aluminum flakes alone.
- the present invention provides a printed matter wherein printing is made on a transparent substrate by use of the above described ink.
- the transparent substrate polyester resin (PET), acrylic resin, polycarbonate resin, glass and the like can be used; but an ink in which the solvent contains 20 wt % or more of 3-methyl-3-methoxy-1-butanol is used for the printed matter, and hence even if the above described substrate is polycarbonate resin, it is suppressed for the backside on which the ink has been printed to be damaged by the solvent. Accordingly, it is preferable to view the printed matter from the surface, as being the front surface, opposite to the printed surface of the transparent substrate for the purpose of imparting the specular gloss appearance.
- a mixture was prepared which is composed of 100 parts by weight of an aluminum flake containing aluminum flakes of 0.15 ⁇ m in thickness and 20 ⁇ m 2 to 2,000 m 2 in flake area in a content of 90% and 900 parts by weight of a solvent containing 3-methyl-3-methoxy-1-butanol (hereinafter referred to as MMB) in 100 wt %.
- MMB 3-methyl-3-methoxy-1-butanol
- a mixture was prepared which is composed of 100 parts by weight of the same aluminum flake as used in Example A and 900 parts by weight of a solvent containing MMB in 40 wt % and propyleneglycol monomethyl ether (hereinafter referred to as PGM) in 60 wt %.
- PGM propyleneglycol monomethyl ether
- Example B A mixture similar to that in Example B was prepared except that the solvent composition was such that the content of MMB was 20 wt % and the content of PGM was 80 wt %.
- Example B A mixture similar to that in Example B was prepared except that the solvent composition was such that the content of MMB was 80 wt % and the content of methyl cellosolve (hereinafter referred to as MC) was 20 wt %.
- the solvent composition was such that the content of MMB was 80 wt % and the content of methyl cellosolve (hereinafter referred to as MC) was 20 wt %.
- Example B A mixture similar to that in Example B was prepared except that the solvent composition was such that the content of MMB was 15 wt % and the content of PGM was 85 wt %.
- Example A A mixture similar to that in Example A was prepared except that the solvent composition was such that the content of PGM was 100 wt %.
- Example A A mixture similar to that in Example A was prepared except that the solvent composition was such that the content of MC was 100 wt %.
- a resin solution was prepared which was composed of 100 parts by weight of polyvinyl butyral resin as a binding agent and 900 parts by weight of the solvent used in Example A.
- Example 1 The mixture of Example A and the resin solution of Reference Example A were mixed together (Example 1), the mixture of Example B and the resin solution of Reference Example B were mixed together (Example 2), the mixture of Example C and the resin solution of Reference Example C were mixed together (Example 3), the mixture of Example D and the resin solution of Reference Example D were mixed together (Example 4), and thus the inks (Examples 1 to 4) shown below in Table 1 were obtained.
- the working environment is not remarkably deteriorated even with ordinary facilities when mass printing has been made (resolution of drawback ⁇ 1>), neither the gradual degradation of the specular gloss appearance nor the generation of printing unevenness occurs even for a large number of printed sheets when mass printing is made by means of the screen printing (resolution of drawback ⁇ 2>), and no degradation of the specular gloss appearance is found when printing has been made on the backside of a transparent polycarbonate substrate and viewing is made from the front surface side thereof (resolution of drawback ⁇ 3>).
- the present invention can provide an ink that can concurrently resolve the above described drawback ⁇ 1>, drawback ⁇ 2>, and drawback ⁇ 3>, a production method of the ink, the materials for producing the ink, and the printed matter wherein printing is made by use of the ink.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
An ink comprises 100 parts by weight of an aluminum flake containing aluminum flakes of 0.5 μm or less, more preferably 0.3 μm or less, in thickness and 20 μm2 to 2,000 μm2 in flake area in a content of 75% or more, 3 to 200 parts by weight of a binding agent, and 600 to 4,000 parts by weight of a solvent, wherein the solvent is the one containing 20 wt % or more of 3-methyl-3-methoxy-1-butanol (MMB).
Description
1. Field of the Invention
The present invention relates to an ink, a production method of the ink, the materials for producing the ink and the printed matter wherein printing is made by use of the ink.
2. Description of the Related Art
It has so far been well known that aluminum flake is added to an ink to prepare a metallic tone ink. However, a printed matter printed with such a metallic tone ink has minute glittering dots, but does not exhibit any specular gloss.
Thereafter, the use of an ink, in which a special aluminum powder is utilized and the amounts of a binding agent and a diluting solvent are specified, has lead to the advent of a technique with which a bright printed matter with metallic luster can be obtained (see Patent Document 1). However, in practice, it has been found that no printed matter high in specular gloss can be obtained even when printing is made with the ink described in Patent Document 1.
In these circumstances, an ink has been proposed which comprises 100 parts by weight of an aluminum flake containing aluminum flakes of 0.5 μm or less in thickness and 20 μm2 to 2,000 μm2 in flake area in a content of 75% or more, 15 to 200 parts by weight of abinder polymer, and 600 to 3,000 parts by weight of a solvent (Patent Document 2). It is true that following the description of Patent Document 2, a printed matter higher in specular gloss than a printed matter described in Patent Document 1 can be obtained.
However, the types of solvents, utilized in an ink which imparts to a printed matter metallic luster or specular gloss, are at best described in paragraph [0012] in Patent Document 2 as such that “Additionally, the solvent utilized is the one that dissolves the above described binder polymer and dilutes the solution thus obtained, and the general examples of such a solvent include esters, ethers, ketones, aromatic hydrocarbons and the like.” Additionally, even in the examples concerned, ketone based solvents and glycol ether based solvents are merely exemplified, but the compound names of such solvents are not specified.
Additionally, in Patent Document 1, particularly in paragraph [0024], there is found a description that “Furthermore, as the diluting solvent utilized in the present invention, any solvent capable of dissolving and diluting a binding agent used can be optionally utilized, and hence the solvent can be selected according to the printing method involved in such a way that the solvent is optionally selected from the commonly used solvents including alcohols such as methyl alcohol, ethyl alcohol, propyl alcohol, and butyl alcohol; ktones such as acetone, isophorone, methyl ethyl ketone, and methyl isobutyl ketone; cellosolves such as methyl cellosolve and ethyl cellosolve; and aromatic hydrocarbons such as toluene and xylene; additionally, aliphatic hydrocarbons, ethers and the like, commonly used as diluents and compatible with the above described solvents but incapable of dissolving the binding agents, can also be used as printing aids and dryness regulators.” Furthermore, in paragraph [0039] in Patent Document 1, although the standard for solvent selection is not presented, there is found a description that “Incidentally, the adaptabilities of the bright ink 2 with respect to various types of substrates have been examined, and the results obtained are as shown in Table 5,” and there is found another description in Table 5 that isopropyl alcohol and cellosolves are adaptable to various resins such as polyvinyl chloride, PET (polyester), acrylic resin, and polycarbonate. However, no description is found as to how isopropyl alcohol and cellosolves adapt.
[Patent Document 1]
Japanese Patent No. 2784566
[Patent Document 2]
Japanese patent No. 3151606
When printing is made according to Patent Document 1 and Patent Document 2, a bright printed matter or a specular surface printed matter can be obtained, but it has been found that serious drawbacks are generated when such printing is applied to industrial mass production, particularly, when the screen printing is applied to mass printing.
As a first drawback, the inks described in Patent Document 1 and Patent Document 2 each contains a large content of solvent, and hence mass printing is not preferable because the working environment is remarkably degraded in operation with ordinary facilities when a highly toxic solvent is used for which the LD 50 value representing the mouse oral toxicity is 2,000 mg/kg or less, particularly, 1,600 mg/kg or less, or a solvent is used for which the vapor pressure is high (drawback <1>). As a second drawback, in making mass printing, the specular gloss appearance is degraded and printing unevenness is generated with increasing number of the printed sheets when the number of the printed sheets is large (drawback <2>). As a third drawback, when printing is made on the backside of a transparent polycarbonate substrate and viewing is made from the front surface side of the substrate, the specular gloss appearance is sometimes remarkably degraded (drawback <3>).
Accordingly, an object of the present invention is the provision of an ink to meet the purpose of concurrently resolving the above described drawback <1>, drawback <2>, and drawback <3>, a production method of the ink, the materials for producing the ink, and the printed matter wherein printing is made by use of the ink.
For the purpose of resolving the above described problems, the present invention provides an ink comprising 100 parts by weight of an aluminum flake containing aluminum flakes of 0.5 μm or less, more preferably 0.3 μm or less, in thickness and 20 μm2 to 2,000 μm2 in flake area in a content of 75% or more, 3 to 200 parts by weight of a binding agent, and 600 to 4,000 parts by weight of a solvent, wherein the solvent is the one containing 20 wt % or more of 3-methyl-3-methoxy-1-butanol. Additionally, when the above described solvent is the one containing 40 wt % or more of 3-methyl-3-methoxy-1-butanol, the problems in the present invention can be resolved further more satisfactorily.
In the present invention, 3-methyl-3-methoxy-1-butanol contained in the solvent is represented by the following formula, has an LD 50 value of 5,830 mg/kg representing the mouse oral toxicity thereof the toxicity thereof is extremely low, and is not so large in vapor pressure at room temperature.
Accordingly, when the screen printing is applied to conduct mass printing which an ink comprising a solvent containing 20 wt % or more of 3-methyl-3-methoxy-1-butanol which is thus low in toxicity, the working environment is remarkably improved with ordinary facilities (resolution of drawback <1>).
Additionally, 3-methyl-3-methoxy-1-butanol has an appropriate boiling point of 174° C., and hence even when the screen printing is applied to conduct mass printing by use of the above described ink, clogging is scarcely caused in the screen by the solvent evaporation on the stencil with the elapsed time of printing operation. Accordingly, when the screen printing is applied to mass printing, even for a large number of printed sheets, neither the gradual generation of printing unevenness nor the gradual degradation of the specular gloss appearance caused by the printing unevenness occurs (resolution of drawback <2>).
Additionally, 3-methyl-3-methoxy-1-butanol dissolves satisfactorily a binding agent for use in ink such as polyester resin, acrylic resin, cellulose derivative resin, polyvinyl butyral resin and the like, but is small on one hand in affinity to polycarbonate and the boiling point thereof is appropriate, and hence even when this compound is applied onto a polycarbonate substrate, drying can be conducted without damaging the surface of the polycarbonate substrate. It is particularly preferable that the drying temperature of the printed matter is of the order of 40 to 60° C. Accordingly, even when the above described ink is printed on the backside of the transparent polycarbonate substrate, the backside of the polycarbonate substrate is prevented from being damaged and thereby whitened. Thus, no degradation of the specular gloss appearance is found when printing is made on the backside of the transparent polycarbonate substrate and viewing is made from the front surface side of the substrate (resolution of drawback <3>).
Additionally, the present invention provides a production method of an ink comprising a step of mixing a mixture, which comprises an aluminum flake containing aluminum flakes of 0.5 μm or less, preferably 0.3 μm or less, in thickness and 20 μm2 to 2,000 μm2 in flake area in a content of 75% or more and a solvent containing 20 wt % or more of 3-methyl-3-methoxy-1-butanol, with either a binding agent or a binding agent solution. According to a process involving such a step, the above described ink capable of resolving the drawbacks <1> to <3> can be easily produced by very simple operation.
Additionally, the present invention provides a mixture which comprises an aluminum flake containing aluminum flakes of 0.5 μm or less, preferably 0.3 μm or less, in thickness and 20 μm2 to 2,000 μm2 in flake area in a content of 75% or more and a solvent containing 20 wt % or more of 3-methyl-3-methoxy-1-butanol. The production of the ink by use of such a mixture permits obtaining the ink capable of resolving the drawbacks <1> to <3> without being accompanied by a dangerous process of handling the above described aluminum flakes alone.
Additionally, the present invention provides a printed matter wherein printing is made on a transparent substrate by use of the above described ink. As the transparent substrate, polyester resin (PET), acrylic resin, polycarbonate resin, glass and the like can be used; but an ink in which the solvent contains 20 wt % or more of 3-methyl-3-methoxy-1-butanol is used for the printed matter, and hence even if the above described substrate is polycarbonate resin, it is suppressed for the backside on which the ink has been printed to be damaged by the solvent. Accordingly, it is preferable to view the printed matter from the surface, as being the front surface, opposite to the printed surface of the transparent substrate for the purpose of imparting the specular gloss appearance.
Description will be made below on the Examples of the present invention and Comparative Examples.
A mixture was prepared which is composed of 100 parts by weight of an aluminum flake containing aluminum flakes of 0.15 μm in thickness and 20 μm2 to 2,000 m2 in flake area in a content of 90% and 900 parts by weight of a solvent containing 3-methyl-3-methoxy-1-butanol (hereinafter referred to as MMB) in 100 wt %.
A mixture was prepared which is composed of 100 parts by weight of the same aluminum flake as used in Example A and 900 parts by weight of a solvent containing MMB in 40 wt % and propyleneglycol monomethyl ether (hereinafter referred to as PGM) in 60 wt %.
A mixture similar to that in Example B was prepared except that the solvent composition was such that the content of MMB was 20 wt % and the content of PGM was 80 wt %.
A mixture similar to that in Example B was prepared except that the solvent composition was such that the content of MMB was 80 wt % and the content of methyl cellosolve (hereinafter referred to as MC) was 20 wt %.
A mixture similar to that in Example B was prepared except that the solvent composition was such that the content of MMB was 15 wt % and the content of PGM was 85 wt %.
A mixture similar to that in Example A was prepared except that the solvent composition was such that the content of PGM was 100 wt %.
A mixture similar to that in Example A was prepared except that the solvent composition was such that the content of MC was 100 wt %.
A resin solution was prepared which was composed of 100 parts by weight of polyvinyl butyral resin as a binding agent and 900 parts by weight of the solvent used in Example A.
A resin solution similar to that of Reference Example A was prepared except that the solvent having the composition adopted in Example B was used.
A resin solution similar to that of Reference Example A was prepared except that the solvent having the composition adopted in Example C was used.
A resin solution similar to that of Reference Example A was prepared except that the solvent having the composition adopted in Example D was used.
A resin solution similar to that of Reference Example A was prepared except that the solvent having the composition adopted in Comparative Example A was used.
A resin solution similar to that of Reference Example A was prepared except that the solvent having the composition adopted in Comparative Example B was used.
A resin solution similar to that of Reference Example A was prepared except that the solvent having the composition adopted in Comparative Example C was used.
The mixture of Example A and the resin solution of Reference Example A were mixed together (Example 1), the mixture of Example B and the resin solution of Reference Example B were mixed together (Example 2), the mixture of Example C and the resin solution of Reference Example C were mixed together (Example 3), the mixture of Example D and the resin solution of Reference Example D were mixed together (Example 4), and thus the inks (Examples 1 to 4) shown below in Table 1 were obtained.
TABLE 1 | ||||
Binding | Solvent | |||
Aluminum | agent | (parts | ||
(parts by | (parts by | by | ||
Example | weight) | weight) | weight) | Solvent composition |
1 | 100 | 100 | 1800 | MMB = 100% |
2 | 100 | 100 | 1800 | MMB = 40% PGM = 60% |
3 | 100 | 100 | 1800 | MMB = 20% PGM = 80% |
4 | 100 | 100 | 1800 | MMB = 80% MC = 20% |
PGM: Propyleneglycol monomethyl ether | ||||
MMB: 3-Methyl-3-methoxy-1-butanol | ||||
MC: Methyl cellosolve |
Screen printing was conducted with the inks of Examples 1 to 4 by use of a T-250 mesh stencil on one side surface of a sheet of 0.2 mm thick transparent polycarbonate film. The printed matters thus obtained were dried at 60° C. for 30 minutes. The number of the sheets of each printed matter was set at 500. The specular gloss appearance of each obtained printed matter was observed visually from the side of the surface opposite to the printed surface. Additionally, the printing conditions and the working environment were also observed, and the results thus obtained are shown below in Table 2.
TABLE 2 | ||||
Stencil | ||||
Specular gloss | clogging/printing | |||
appearance | unevenness |
First | 500th | First | 500th | ||
Example | sheet | sheet | Sheet | sheet | Working environment |
1 | ⊚ | ⊚ | ⊚ | ⊚ | Solvent vapor |
concentration: low | |||||
2 | ⊚ | ⊚ | ⊚ | ⊚ | Solvent vapor |
concentration: low | |||||
3 | ⊚ | ◯ | ⊚ | ◯ | Solvent vapor |
concentration: low | |||||
4 | ⊚ | ⊚ | ⊚ | ⊚ | Solvent vapor |
concentration: low | |||||
⊚: Excellent | |||||
◯: Good | |||||
Δ: Poor | |||||
X: Very poor |
The mixture of Comparative Example A and the resin solution of Reference Example E were mixed together (Comparative Example 1), the mixture of Comparative Example B and the resin solution of Reference Example F were mixed together (Comparative Example 2), the mixture of Comparative Example C and the resin solution of Reference Example G were mixed together (Comparative Example 3), and thus the inks (Comparative Examples 1 to 3) shown below in Table 3 were obtained.
TABLE 3 | ||||
Binding | ||||
agent | Solvent | |||
Aluminum | (parts | (parts | ||
Comparative | (parts by | by | by | Solvent |
example | weight) | weight) | weight) | composition |
1 | 100 | 100 | 1800 | PGM = 85% MMB = 15% |
2 | 100 | 100 | 1800 | PGM = 100% |
3 | 100 | 100 | 1800 | MC = 100% |
Printing was made with the inks of Comparative Examples 1 to 3 under the same conditions as those in Examples 1 to 4, and the observation similar to that in these examples was conducted. The results thus obtained are shown below in Table 4.
TABLE 4 | ||||
Stencil | ||||
Specular gloss | clogging/printing | |||
appearance | unevenness |
Comparative | First | 500th | First | 500th | |
example | sheet | sheet | sheet | sheet | Working environment |
1 | ⊚ | Δ | ⊚ | Δ | Solvent vapor |
concentration: | |||||
slightly high | |||||
2 | ⊚ | X | ⊚ | X | Solvent vapor |
concentration: | |||||
high | |||||
3 | ⊚ | X | ⊚ | X | Solvent vapor |
concentration: | |||||
high | |||||
According to the present invention, as described above, the working environment is not remarkably deteriorated even with ordinary facilities when mass printing has been made (resolution of drawback <1>), neither the gradual degradation of the specular gloss appearance nor the generation of printing unevenness occurs even for a large number of printed sheets when mass printing is made by means of the screen printing (resolution of drawback <2>), and no degradation of the specular gloss appearance is found when printing has been made on the backside of a transparent polycarbonate substrate and viewing is made from the front surface side thereof (resolution of drawback <3>). Accordingly, the present invention can provide an ink that can concurrently resolve the above described drawback <1>, drawback <2>, and drawback <3>, a production method of the ink, the materials for producing the ink, and the printed matter wherein printing is made by use of the ink.
Claims (14)
1. An ink consisting essentially of:
100 parts by weight of an aluminum flake containing aluminum flakes of 0.5 mm or less in thickness and 20 mm2 to 2,000 mm2 in flake area, in an amount of 75 wt % or more;
3 to 200 parts by weight of a binding agent; and
600 to 4,000 parts by weight of a solvent containing 20 wt % or more of 3-methyl-3-methoxy-1-butanol.
2. The ink according to claim 1 , wherein the thickness of said aluminum flake is 0.3 mm or less.
3. A production method of the ink according to claim 1 , comprising a step of mixing a mixture consisting essentially of an aluminum flake containing aluminum flakes of 0.5 mm or less in thickness and 20 mm2 to 2,000 mm2 in flake area in an amount of 75 wt % or more and a solvent containing 3-methyl-3-methoxy-1-butanol in an amount of 20 wt % or more, with either a binding agent or a binding agent solution.
4. A production method of the ink according to claim 2 , comprising a step of mixing a mixture consisting essentially of an aluminum flake containing aluminum flakes of 0.3 mm or less in thickness and 20 mm2 to 2,000 mm2 in flake area in an amount of 75 wt % or more and a solvent containing 3-methyl-3-methoxy-1-butanol in an amount of 20 wt % or more, with either a binding agent or a binding agent solution.
5. A mixture consisting essentially of an aluminum flake containing aluminum flakes of 0.5 mm or less in thickness and 20 mm2 to 2,000 mm2 in flake area in an amount of 75 wt % or more and a solvent containing 3-methyl-3-methoxy-1-butanol in an amount of 20 wt % or more.
6. A mixture consisting essentially of an aluminum flake containing aluminum flakes of 0.3 mm or less in thickness and 20 mm2 to 2,000 mm2 in flake area in an amount of 75wt % or more and a solvent containing 3-methyl-3-methoxy-1-butanol in an amount of 20 wt % or more.
7. Printed matter comprising ink according to claim 1 printed on a transparent substrate.
8. Printed matter comprising ink according to claim 2 printed on a transparent substrate.
9. The printed matter according to claim 7 , wherein said transparent substrate comprises polycarbonate resin.
10. The printed matter according to claim 8 , wherein said transparent substrate comprises polycarbonate resin.
11. The printed matter according to claim 7 , wherein viewing is made from the surface, as being the front surface, opposite to the printed surface of said transparent substrate.
12. The printed matter according to claim 8 , wherein viewing is made from the surface, as being the front surface, opposite to the printed surface of said transparent substrate.
13. The printed matter according to claim 9 , wherein viewing is made from the surface, as being the front surface, opposite to the printed surface of said transparent substrate.
14. The printed matter according to claim 10 , wherein viewing is made from the surface, as being the front surface, opposite to the printed surface of said transparent substrate.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002345247A JP2004175965A (en) | 2002-11-28 | 2002-11-28 | Ink, method for producing the same, material for producing ink and printed matter |
JP2002-345247 | 2002-11-28 |
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US20040103816A1 US20040103816A1 (en) | 2004-06-03 |
US6939400B2 true US6939400B2 (en) | 2005-09-06 |
Family
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US10/723,265 Expired - Lifetime US6939400B2 (en) | 2002-11-28 | 2003-11-25 | Ink, production method of the same materials for producing the same and printed matter with the same |
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US (1) | US6939400B2 (en) |
EP (1) | EP1437389B1 (en) |
JP (1) | JP2004175965A (en) |
KR (1) | KR101024327B1 (en) |
CN (2) | CN101058683B (en) |
DE (1) | DE60327984D1 (en) |
HK (1) | HK1066824A1 (en) |
MY (1) | MY136166A (en) |
SG (1) | SG121816A1 (en) |
TW (1) | TWI233445B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US20090220694A1 (en) * | 2008-02-28 | 2009-09-03 | Kabushiki Kaisha Toshiba | Aqueous inkjet ink and inkjet recording method |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1881043B1 (en) * | 2005-03-18 | 2012-12-05 | Teikoku Printing Inks Mfg. Co., Ltd | Ink and printed matter |
JP3837596B2 (en) | 2005-03-18 | 2006-10-25 | 帝国インキ製造株式会社 | Ink and printed matter |
EP1881042B1 (en) * | 2005-04-12 | 2009-06-24 | Teikoku Printing Inks Mfg. Co., Ltd | Ink for specular print |
CN101050324B (en) * | 2006-10-19 | 2012-08-15 | 日本精工油墨股份有限公司 | Ink and decorative printed products |
KR100881320B1 (en) | 2007-04-26 | 2009-02-02 | 주식회사 우즈필 | High reflective ink and manufacturing process for high brightness |
US20090219330A1 (en) * | 2008-02-28 | 2009-09-03 | Kabushiki Kaisha Toshiba | Inkjet printing method, pretreatment liquid for inkjet printing and ink composition |
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US5037475A (en) * | 1988-06-16 | 1991-08-06 | Showa Alumi Powder K.K. | Colored metallic pigment, method for the production of same and products containing same |
US5176746A (en) * | 1990-09-20 | 1993-01-05 | Sakura Color Products Corporation | Oil ink composition |
JP2784566B2 (en) | 1993-12-22 | 1998-08-06 | ヤマックス株式会社 | Bright printed matter with metallic luster |
JP3151606B2 (en) | 1996-11-27 | 2001-04-03 | 帝国インキ製造株式会社 | Special inks and printed matter |
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US4233195A (en) * | 1979-02-26 | 1980-11-11 | Reynolds Metals Company | Metallic printing inks and metallized papers printed therewith |
JPH0689281B2 (en) | 1985-04-02 | 1994-11-09 | 株式会社リコー | Ink cleaner for printing machine |
JPH0791496B2 (en) * | 1991-03-18 | 1995-10-04 | 塚原工業株式会社 | Ink for stamp |
JPH09296141A (en) * | 1996-04-30 | 1997-11-18 | Mitsubishi Pencil Co Ltd | Stamp ink composition |
JP4063462B2 (en) * | 1999-11-30 | 2008-03-19 | 三菱鉛筆株式会社 | Oil-based ink composition for ballpoint pens |
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2002
- 2002-11-28 JP JP2002345247A patent/JP2004175965A/en active Pending
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2003
- 2003-09-10 TW TW92124987A patent/TWI233445B/en not_active IP Right Cessation
- 2003-09-19 KR KR20030065126A patent/KR101024327B1/en active IP Right Grant
- 2003-11-11 SG SG200306572A patent/SG121816A1/en unknown
- 2003-11-21 EP EP20030257359 patent/EP1437389B1/en not_active Expired - Fee Related
- 2003-11-21 DE DE60327984T patent/DE60327984D1/en not_active Expired - Lifetime
- 2003-11-24 MY MYPI20034536 patent/MY136166A/en unknown
- 2003-11-25 US US10/723,265 patent/US6939400B2/en not_active Expired - Lifetime
- 2003-11-28 CN CN2007101087996A patent/CN101058683B/en not_active Expired - Fee Related
- 2003-11-28 CN CNB2003101195437A patent/CN1328334C/en not_active Expired - Lifetime
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- 2004-12-10 HK HK04109807A patent/HK1066824A1/en not_active IP Right Cessation
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US5037475A (en) * | 1988-06-16 | 1991-08-06 | Showa Alumi Powder K.K. | Colored metallic pigment, method for the production of same and products containing same |
US5176746A (en) * | 1990-09-20 | 1993-01-05 | Sakura Color Products Corporation | Oil ink composition |
JP2784566B2 (en) | 1993-12-22 | 1998-08-06 | ヤマックス株式会社 | Bright printed matter with metallic luster |
JP3151606B2 (en) | 1996-11-27 | 2001-04-03 | 帝国インキ製造株式会社 | Special inks and printed matter |
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US20090220694A1 (en) * | 2008-02-28 | 2009-09-03 | Kabushiki Kaisha Toshiba | Aqueous inkjet ink and inkjet recording method |
US8133313B2 (en) * | 2008-02-28 | 2012-03-13 | Kabushiki Kaisha Toshiba | Aqueous inkjet ink and inkjet recording method |
Also Published As
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TWI233445B (en) | 2005-06-01 |
JP2004175965A (en) | 2004-06-24 |
DE60327984D1 (en) | 2009-07-30 |
CN101058683B (en) | 2010-06-16 |
EP1437389B1 (en) | 2009-06-17 |
KR20040047555A (en) | 2004-06-05 |
HK1066824A1 (en) | 2005-04-01 |
CN1328334C (en) | 2007-07-25 |
US20040103816A1 (en) | 2004-06-03 |
CN101058683A (en) | 2007-10-24 |
SG121816A1 (en) | 2006-05-26 |
EP1437389A1 (en) | 2004-07-14 |
MY136166A (en) | 2008-08-29 |
KR101024327B1 (en) | 2011-03-23 |
TW200415211A (en) | 2004-08-16 |
CN1504521A (en) | 2004-06-16 |
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